A breakdown of the percentages of population of elderly people aged 65 and more as long as a hundred-year period from 1940 to 2040 as the prediction year in the USA, Sweden and Japan is presented by a line chart. Overall, although Japan's older inhabitants least in beginning, this is predicted to increase pass all countries in the next a quarter decade.
There are the similarities and differences population among three countries. The number of elderly human in Japan stood at 5%, approximately 7% in Sweden and in the USA at 9%. The rate of citizens in the USA and Sweden experienced the same pattern since 1940 until 1990. However, the figure for older ones in Japan indeed drop slightly to 3 percent. This trend had continued around 25 years later between 1960 and 1985.
Moving to a more detailed analysis, the population in Japan noticed an extreme rise in the last two a half decades, even this trend passed the final prediction of total old people in the USA and Sweden in 2040 which each at 23% and 23% respectively.